@@ -9,7 +9,7 @@ "os/exec"
 	"strings"
 	"time"
 
-	"github.com/fatih/color"
+	"alin.ovh/erl/output"
 )
 
 type Command interface {
@@ -24,14 +24,13 @@
 	name string
 	args []string
 
-	opts Options
+	out output.Output
 
-	printFail    func(string, ...any)
-	printInfo    func(string, ...any)
-	printSuccess func(string, ...any)
+	opts Options
 }
 
 type Options struct {
+	Output io.Writer
 	Stdout io.Writer
 	Stderr io.Writer
 }
@@ -45,15 +44,16 @@ }
 	if options.Stderr == nil {
 		options.Stderr = os.Stderr
 	}
+	if options.Output == nil {
+		options.Output = os.Stderr
+	}
 
 	return &Cmd{
 		name: name,
 		args: args,
 		opts: options,
 
-		printFail:    color.New(color.FgRed).PrintfFunc(),
-		printInfo:    color.New().PrintfFunc(),
-		printSuccess: color.New(color.FgGreen).PrintfFunc(),
+		out: output.New(options.Output),
 	}
 }
 
@@ -65,11 +65,11 @@ return fmt.Errorf("error killing command: %v", err)
 		}
 
 		if cmd.ProcessState == nil {
-			cmd.printInfo("[command not stopped, waiting %s seconds before killing]\n", timeout)
+			cmd.out.Info("[command not stopped, waiting %s seconds before killing]\n", timeout)
 			time.Sleep(timeout)
 
 			if cmd.ProcessState == nil {
-				cmd.printInfo("[command not stopped, killing]\n")
+				cmd.out.Info("[command not stopped, killing]\n")
 				err := cmd.Process.Kill()
 				if err != nil {
 					return fmt.Errorf("error killing command: %v", err)
@@ -91,9 +91,9 @@ if err != nil {
 		var exitErr *exec.ExitError
 		if errors.As(err, &exitErr) {
 			if cmd.Exited() {
-				cmd.printFail("[command exited with code %d]\n", cmd.ProcessState.ExitCode())
+				cmd.out.Fail("[command exited with code %d]\n", cmd.ProcessState.ExitCode())
 			} else {
-				cmd.printFail("[command stopped]\n")
+				cmd.out.Fail("[command stopped]\n")
 			}
 		} else {
 			return fmt.Errorf("error waiting for command: %v", err)
@@ -101,7 +101,7 @@ }
 	}
 
 	if cmd.Exited() && cmd.ProcessState.Success() {
-		cmd.printSuccess("[command finished]\n")
+		cmd.out.Success("[command finished]\n")
 	}
 
 	return nil
@@ -109,7 +109,7 @@ }
 
 func (cmd *Cmd) Start() error {
 	cmd.makeCommand()
-	cmd.printSuccess("[running: %s %s]\n", cmd.name, strings.Join(cmd.args, " "))
+	cmd.out.Success("[running: %s %s]\n", cmd.name, strings.Join(cmd.args, " "))
 	err := cmd.Cmd.Start()
 	if err != nil {
 		return fmt.Errorf("error starting command: %v", err)